“Being that” comes from portuguese, once the expression “sendo que” is very popular among us Brazilians, and during translations, it’s very difficult to find a replacement, so some people “invented” this term.

The Merriam-Webster Dictionary of English Usage implies that “being that” was standard English in the 17th century, but “faded into dialect”. It still occurs in the U.S. Southern, South Midland, and New England dialects.

I respectfully suggest that Denise has just made a guess based on her own experience. She may have seen such translations, but that can’t be how the phrase entered English.

The only thing objectionable about the phrase “It being the case that …” is that it’s unnecessarily long. If the words “It” and “the case” are dropped out, the meaning remains clear, but “being” no longer has a subject. That’s probably why the usage is considered disturbing. If you take a sentence like “Being that there’s no more bread, I made a sandwich with crackers” literally, the phrase before the comma looks like a dangling participle.